tolong jawab nomer 23 sama 26? pakek cara

23.10 kali 6 60(B) 24.A 26.2 tambah 3 5 kali 8 40 (D)

23. L segitiga = a × t / 2
L = 15 × 10 / 2 = 150/2 = 75

26.
L diarsir = L PQS - L PQT + (L PQR - L PQT)
= L PQS + L PQR - 2 L PQT
L PQS = a × t / 2 = 8×8/2 = 32
L PQR = a × t / 2 = 8×5/2 = 20
L PQT = a × t / 2 = 8×3/2 = 12
L diarsir = 32+20-2(12)
= 52-24 = 28